Unable to run C6748 LCDK Quick Start example

I have the same behaviour from my LCDK. I would guess that there is no code in NAND or the code is waiting for the camera. The first 4 DIP switches correspond to inverted BOOT[4:1]. I get something out the serial port by using UART boot, SW1:01010000. You should get a "BOOTME" on UART2.

I eventually gave up trying to get anything out of NAND code. I did get something out of UART2 by running my own program using a XDS100 JTAG, CCSv5.2, and the StarterWare UART echo example.

Seems the LCDK is for those that can fend for themselves. Doesn't to be a lot of guidance out there.

Hello Norman,

Thanks for your reply.

I have also tried using the UART boot instead, like you've mentioned, but still got just a blank screen on TeraTerm.

• What do you suggest I do to debug this?
• Does the NAND/UART boot work only once? Could I have missed that because of muddling up the order of steps when I tried this initially?

I haven't bought a JTAG emulator yet, which from what I've gathered, I need to start working with code composer examples.

Thanks!

No idea about NAND boot details. The UART boot should result in "BOOTME" every few seconds. The USB/Serial on J3 is bus powered, so you should be able to plug that in before you power up the board. Verify COM3 is indeed the Virtual COM port associated with USB/J3 on the board. Power up the board. LED D3 is briefly red before going green. LEDs D4-D7 should light. Sorry, that's all I got.

Could you explain what you mean by "Verify COM3 is indeed the Virtual COM port associated with USB/J3 on the board."

Also, when I power up, the board, LED 3 is indeed red before going green and LEDs D4-D7 are indeed lit up.

When you plug in the USB/Serial/J3, a virtual COM port should appear in your Device Manager. On my PC, it is under "Port2 (COM & LPT)" -> "USB Serial Port (COM??)". My PC is pretty old, so it has some real serial ports that use up COM1 and COM2. If your PC is legacy free, the only COM port will probably be the LCDK's. That is unless you have other USB to Serial Adapters plugged in.

Norman,

You're right. A separate COM port does appear, as shown in the attached screenshot in the beginning of the thread.

Also, I just tried running the UART boot on a Windows 7 machine and it worked and does indeed show BOOTME on TeraTerm on that machine.

A couple of questions more:

Given that UART boot works on the other machine, would it be safe to go to the next step in trying to get to use this board? Any suggestions as to what I should try doing next?Should I try running any example code using CCS but without the jtag emulator (for now)?

I have never used UART2 for BOOT / Flash programming. I would guess you could flash pre-built or custom app into NAND using UART boot. That would wipe out the factory load though, The StarterWare examples might not work standalone. I suspect that the CCS GEL startup scripts will need to be ported over to actual code or maybe AISGEN can do the same initializations.

I don't see any option to use UART2 as a connection in CCSv5. Never tried it. It might be there somewhere, Hopefully somebody more knowledgable than me can help you with an alternate to JTAG emulator.

Do you think a JTAG emulator would make the process easier for me, going ahead? Thanks for your inputs.

Since I'm a novice, I'm finding it hard to get my head around the hardware right now.

I believe that a JTAG emulator would make it it easier to develop your own code. But my opinion is based on my ignorance of other possibilities. Some TI guys might see another way for you to use your LCDK. Programming to NAND flash and booting is iteratively slow and hard to debug.  The XDS100 is relatively inexpensive - around $80. I'm using CCSv5.2 with the Free Limited license. Hopefully it will stay free.

Thanks again for your help, Norman.

Is there anyone else who can point me to the next step?

Hi Akshay,

            Welcome to the C6748 developers community.C674x DSP is ideally suited for several real time applications and has a wide variety of peripheral integration.

A good Starting point to get information on the device refer the following link

http://processors.wiki.ti.com/index.php/L138/C6748_Development_Kit_(LCDK)

As a startup for the software offering on the device is the BIOS C6SDK 2.0 User Guide

http://processors.wiki.ti.com/index.php/BIOS_C6SDK_2.0_User_Guide

which has the detailed procedure for demonstration of the face detect demo on C6748.

If you are looking for flashing simple starterware example binaries in the board  you can build the .bin files using CCS and use the following link to flash the binary on the board.

http://processors.wiki.ti.com/index.php/LCDK_User_Guide#NAND_Flashing

For further references and available trainings on the C6748 you can refer the following link

http://processors.wiki.ti.com/index.php/Category:C674x

Hope this helps

Regards,

Iyshwarya

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Thank you Iyshwarya. I am currently buying the JTAG emulator and will try using it with StarterWare examples.